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Sleepy
김성원
👁 Image
Born	Kim Sung-won (1984-02-21) February 21, 1984 (age 42) Incheon, South Korea
Occupations	Rapper Singer Songwriter Record producer
Spouse	Kim Na-hyun (m. 2022)
Children	2
Musical career
Genres	Hip hop
Instrument	Vocals
Years active	2008–present
Labels	TS Entertainment, PVO Entertainment^[1]
Formerly of	Untouchable
Musical artist
Korean name
Hangul	김성원
RR	Gim Seongwon
MR	Kim Sŏngwŏn

Kim Sung-won (Korean: 김성원; born February 21, 1984), better known by his stage name Sleepy (슬리피), is a South Korean rapper and a television personality.^[2] He is a member of the hip hop boy duo Untouchable. He released his solo debut single, "Cool Night", on June 16, 2015.^[3] He became a household name after appearing on reality TV shows like Real Man, I Live Alone, Law of the Jungle, and We Got Married.

TS Entertainment lawsuit

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On September 14, 2019, it was revealed that Sleepy had filed a lawsuit to terminate his contract with TS Entertainment, citing lack of trust after they refused to show him payment documents and a physical copy of his contract.^[4] Sleepy also said that he did not receive any payment for his activities until 10 years after his contract was signed.^[5] TS later denied these statements, saying all of Sleepy's claims were "false" and that he embezzled funds from the company, which Sleepy denied.^[6] The next day, it was announced TS Entertainment was forwarded to prosecution for overdue payments of artists.^[7]

Personal life

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Sleepy planned to marry his girlfriend Kim Na-hyun on October 10, 2021, however he postponed the wedding due to the COVID-19 pandemic.^[8] Later in March 2022, Sleepy announced that he would marry his non-celebrity girlfriend on April 9, 2022.^[9]

On November 6, Sleepy shared on his Instagram the happy news of his wife's pregnancy and that he was going to be a father soon.^[10]^{[unreliable source?]} Their first child, a daughter, was born on March 29, 2024.^[11] On December 2nd, 2024 Kim Na-hyun appeared for an interview for the first time on television with Sleepy. During the interview Sleepy said his wife is 8 years younger than he is and Na-hyun also revealed that she was currently 4 months pregnant with their second child.^[12]^{[unreliable source?]} Their second child, a boy, was born on April 23, 2025.^[13]

Discography

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Singles

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Title	Year	Peak chart positions	Sales	Album
Title	Year	KOR ^[14]	Sales	Album
As lead artist
"I Feel Blame" (기분탓) feat. Baek A-yeon	2015	39	KOR: 68,580^[15]	Non-album singles
"Body Lotion" (바디로션) feat. Bang Yong-guk	2016	—	KOR: 20,847^[16]
"So What" (내가 뭘 잘못했는데) feat. Lee Guk-joo		—	KOR: 16,984^[17]
"Oh Yeah"		—	—N/a
"Beautiful Life"	2017	—
"Whatever" (맘대로) feat. Bloo, Liquor K.JR		—
"Placebo" (플라시보) with Hash Swan, G2		—
"Because of the Money" (돈 때문이야)^[18] as Sung Won-ee; prod. Young Tak	2020	—
"Santa Brothers!" (산타형!) as Sung Won-ee; prod. and ft. DinDin	2020	—
Collaborations
"Cool Night" (쿨밤) with Song Ji-eun	2015	18	KOR: 213,195^[19]	Non-album singles
"S.M.T.M (Show Me The Money)" with Hash Swan, Olltii, Black Nine, Punchnello, Penomeco, Ignito, Dok2	2017	82	KOR: 45,420^[20]	Non-album singles
"—" denotes releases that did not chart.

Filmography

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Television shows

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Year	Title	Notes
2015	Cultwo Show^[21]
	Mash Up!^[22]^{[unreliable source?]}	Host
	Real Man^[23]	Episode 96-
2016	Cultwo Show^[24]^{[unreliable source?]}
	We Got Married^[25]	with Lee Guk-joo
	King of Mask Singer^[26]	Contestant as "Kung Fu Panda" (Episode 57)
	The God of Music 2	Cast member
2017	All Broadcasting in the World	Member
	Cultwo Show^[27]^[28]
	Show Me the Money 6	Contestant^[29]
2020	King of Mask Singer^[30]	Contestant as "You're Great!" (Episodes 275–276)
2022	One Tree Table	Cast Member^[31]
	Extreme Beginner	Cast Member^[32]
	Show Me the Money 11	Contestant
2022–2023	Mr. Trot 2	Contestant^[33]